2. By an ohmmeter to measure resistance between contacts «1» and «2». It should be about 1 clod. If resistance differs from specified, it is necessary to replace the gauge of a corner of an advancing of ignition.

3. Then to measure resistance between contacts «1» and «3», «2» and «3». The ohmmeter should show zero in both cases. If the ohmmeter shows any resistance, to replace the gauge of a corner of an advancing of ignition.

4. To remove an upholstery under the panel of devices on the right under which the management block is established.

5. To disconnect from the block connecting колодку and to check up conducting between колодкой the gauge of an advancing of ignition and колодкой the management block.